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Car starts to heat up when in grid how to keeping it cool?

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Car starts to heat up when in grid how to keeping it cool?

Old 11-14-12, 10:25 AM
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Car starts to heat up when in grid how to keeping it cool?

We'll I've had this issue now when i auto-x the car , Not somuch drag racing , but still happens there.


After My runs when I Go into grid my car tends to start to heat up , i've done all the reliability and cooling mods / save for getting a second oil cooler . Which I want to do just havent had the cash to invest in one yet

Now its not somuch the car itself overheating , although my last auto-x I had 8 runs , I had to stop the car after the first 5 runs and let it cool off for a bit before I did hte last 3 didnt reach anywhere near dangerous just 100C , which is where the Power FC originally turned the fans on anyway.

but I rather like having my car under 90 ..


until I get my second oilcooler which is right up there on my luist of THINGS I NEED ASAP , there is an event I really want to go to and I dont know if I'll ahve the second oil cooler by then .

I have water injection , and an upgraded KOYO radiator , but in the miami heat YES EVEN IN THE WINTER Temps start to creep if I just let the car idle for ever .

openning the hood helps alot ,

Also my biggest worry is the IAT , since I still have the stock Sidemount , those IAT start to soar when the car is in grid specially after a run .

I know some people use ICE , and that may work the beginning of the day but is there anything else ? can I get a sprayer bottle like the ones used to cool down tires and spray the radiator / inter cooler / oil cooler between runs?
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Old 11-14-12, 11:16 AM
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people use sprayers to cool tires? i never knew that, in drifting we always use sprayers to spray radiators/coolers between runs lol

definitely get a sprayer on those coolers, it makes a difference. you can also cheaply make you're own sprayer system if you'd rather have that. using my old windshield washer bottle/motor i ran lines to my intercooler, oil cooler, and radiator using small hydroponic water misters (gardening section at a hardware store) and turn it on while sitting in the grid between runs.

it does drip water but at the track the small amount of water evaporates instantly, check with your track on how they feel about sprayers. my track understands it, but likes it when i turn it off before pulling up to the start line.
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Old 11-14-12, 11:25 AM
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Originally Posted by NWHero View Post
people use sprayers to cool tires? i never knew that, in drifting we always use sprayers to spray radiators/coolers between runs lol

definitely get a sprayer on those coolers, it makes a difference. you can also cheaply make you're own sprayer system if you'd rather have that. using my old windshield washer bottle/motor i ran lines to my intercooler, oil cooler, and radiator using small hydroponic water misters (gardening section at a hardware store) and turn it on while sitting in the grid between runs.

it does drip water but at the track the small amount of water evaporates instantly, check with your track on how they feel about sprayers. my track understands it, but likes it when i turn it off before pulling up to the start line.
Yeah in auto-x we use those garden pesticide sprayers that you pump just fill it with water to cool down tires when they overheat.


Do you shut the car off when you spray ? or do you leave it on?

another friend had suggested a compressed CO2 can , but since i've heard those thigns freeze metal make them brittle and crack , thats the last thing I need haha .

what other tricks do you use? lol
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Old 11-14-12, 12:30 PM
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If you aren't getting over 100 C, then you are just being OCD. The car is going to heat up when it's running but not physically moving. That's how cars in general work. Without moving air across your cooling system (i.e. radiator, oil cooler, etc), it cannot take out much heat so it will run warmer until the car starts moving again.

You can run a lower temp thermostat and get a vented hood to allow heat to escape while the car isn't moving, but I think you are just being too obsessed with temps.

As far as the IAT, you can relocate it and use a faster sensing one. The stock location will heat soak a little from all the metal which apparently Mazda compensated for with their ECU stock programming. Once you go aftermarket ECU, that may not be the case.
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Old 11-14-12, 01:04 PM
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well , since auto-x runs last around a minute and are generally low speeds its not alot of time for cooling to happen , and then right after the car will warm up more . Its reached 100C before But the IAT , again that 1 minute of running in cool air isnt enough to cool down the heat soaked inter-cooler naturally hence why I'm being a bit paranoid . and it doesnt hurt to know my options.
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Old 11-14-12, 02:13 PM
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Majik is correct, if the car is not moving then there is no airflow over the coolers, so they will not do much.

easiest solution? turn the car off. it wont heat up when its not running. you don't need to sit in grid for half an hour with the thing running either, its not a 1909 Benz

if you insist you could put a fan on the oil cooler, and it'll keep oil temps down when you're not moving, the water spray helps too
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Old 11-14-12, 04:16 PM
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Old 11-14-12, 08:29 PM
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yeah I've read about those not somuch the relocation , but a faster acting one .

and ofcourse I know that if hte car insnt moving the coolers are not really working , I know the concept of a radiator LOL

I just wanted to know if there was an option when in grid to help keep temps down ,


sometimes I have time to turn the car off , othertimes grid is short . depends on alot of things ..



ALSO sometimes when I shut the car off it makes things worse , asoon as you shut the car down the temps start to rise , if hte car is not off long enough for the water in the radiator to cool off shutting hte car down can make things worse , I've tried the shutting down thing LOL , best thing to do is shut off leave fans runnning But my weak miata battery , and underdrive alternator pulley sometimes drain my battery so in an OH **** moment yeah that works LOL


But well thanks for the advice I'll look into That IAT Sensor some more
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